GPSylon is a Java moving map application that is able to display maps like in an atlas and show your position by the use of a gps device. It may track your path, load overlays (e.g. shape files), download maps from expedia servers. - The source code was moved to github!
Liegkat-Archiv delivers ALK converters for spatial data formats (EDBS, BGRUND, SQD, DFK, HK) and coordinate systems used in German cadastral agencies before ALKIS into KML and JML. It delivers Python packages and XSL files.
NrdbView is GIS (Geographic Information System) for displaying and editing of spatial data stored in .shp shapefiles( M, Z and Multipatch). NRDB View Use FreeImage lib to display georeferenced images. Actually MFC c++ but working on WxWidget migrating.
yet another PalmOS serial browser, primarily for GPS receivers. he consists of several distinct applications (like ZboxZ), so he is rather slow, but flexible. nauta can be used as a serial logger for multiple simultaneous channels.
trakkcor tracks your position via gps and submits the position data to your server. All you need is a j2me-compliant mobilephone which supports JSR-82 and an external gps receiver.